Die or pattern cutting machine



PATENTED SEPT. 20, 1904.

F. P. PFLEGHAR. DIE OR PATTERN CUTTING MACHINE.

APPLICATION PILED'OOT. 24, 1903.

3 SHEETS-SHEET. 1.

N0 MODEL.

fill/01012 M/iIESSEE a J $010.2

PATENTED SEPT. 20, 1904.

F. P. PFLEGHAR. DIE 0R PATTERN CUTTING MACHINE.

APPLICATION FILED OCT. 24, 1903.

N0 MODEL.

3 SHEETS-SHEET 2.

PATENTED SEPT. 20, 1904.

F. P. PFLEGHAR.

DIE OR PATTERN CUTTING MACHINE.

APPLICATION FILED OUT. 24, 1903.

3 SHEETSSHEET 3.

N0 MODEL.

UNITED STATES PATENT OFFI FRANK P. PFLEGHAR, NEW HAVEN, CONNECTICUT.

DIE on PATTERN CUTTGING MACHINE.-

SPECIFiCATION forming part of Letters Patent No. 770,442, dated September 20, 1904.

Application filed October 24, 1908. Serial No. 178,360. (No inodel.)

To all whom it may concern.-

Be it known that I, FRANK P. PFLEGHAR, a citizen of the United States, and a resident of New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Die or Pattern Cutting Machines, of which the following is a specification.

I My invention relates to an improvement in die and pattern cutting machines, and has more particularly for its object to provide certain improvements in the'work-table and its support whereby the die, pattern, or other blank to be operated upon may be adjusted to the utmost nicety to permit the tool to form cuts therein of any desired shape and size.

My invention further contemplates certain improvements in the construction, form, and arrangement of the several parts whereby the adjustments above referred to may be made Very rapidly and easily.

A practical embodiment of my invention is represented in the accompanying drawings, in

Figure 1 represents the table and its support in top plan. Fig. 2 is a similar view with the rotatable table and laterally-sliding plate removed. 7 Fig. 3 is a view in side elevation of the parts shown in Fig. 1 with the addition of two machine-frame supports to show the adjustable connection of the bedplate'therewith and also showing a cuttingtool in position to operate upon a die or other piece of work, the lock carried by one of the gages being broken away to more clearly show the parts behind it. Fig. 4 is an inverted plan View of the rotatable table and laterally-sliding plate. Fig. 5 is a vertical central section through the same. Fig. 6 represents the hinged and rocking connection between the bed-plate and frame-support in rear elevation and vertical section. Fig.7 is a detail vertical section through one of the locking-levers and the clamp operated thereby, and Fig. 8 is a detail View showing the means for adjusting one of the supports for the bed-plate vertically.

The two frame-supports shown in the accompanying drawings are denoted by 1 and 2. 1 The portion of the tool represented to illustrate the operation of the machine is denoted by 3.

Patented September 20, 1904..

The bed-plate is denoted by 4, which bed 5 plate is adjustably mounted on the frame-sup? ports 1 and 2, as follows: A rocking bracket 5 is provided with a pintle 6, pivoted in the frame-support 1. is hinged at 6* to this rocking bracket 5. The

rocking bracket 5 is further provided with a.

curved elongated. slot 7, concentric with the pintle 6, through which slot the bolt 8 of a: screw-clamp 9 passes into engagement with, The frame-support 1 is the frame-support 1. preferably provided. with a scale 10 and the rocking bracket 5 with a pointer 11, registering therewith. When the clamp-screw 9 is released, the table may be rocked laterally on the pintle 6 of the bracket 5.

the table in such position. The other framesupport, 2, is provided with a ball 12, which is engaged by a two-part socket 13 14, carried by the inner end of the bed-plate 4. The two members 13 14 of the socket are removably adjusted vertically.- In the present instance the frame-support 2 is shown vertically adjusted, (see Fig. 8,) thus causing the bed-plate 4 to swing vertically on its hinged connection 6* with the bracket 5.

The ball-and-socket connection between the frame-support 2 and bed-plate permits the bed-plate to be moved into any of its adjustments easily and not only clamped in such ad justment by the clamp-screw 9, but also by the bolt and thumb-screw 15 16.

A plate 19 has a longitudinally-sliding connection with the bed-plate 4, in the present instance by providing the plate 4 with two op positely-dovetailed grooves 20, within which grooves the opposite edges of two bars 21 on the plate 19 slide. This plate 19 is further provided with an adjustable stop 22, arranged to limit the inner sliding movement of the plate by engagement with a gage 23, carried by the bed-plate 4. Thislongitudinally-sliding plate 19 is locked to and released from the bed-plate 4 by means of a cam-lever 24 and sliding bolt 25, the free end of which bolt is One end of the bed-plate 4.

When the table has been rocked to the desired positiomthe. clamp-screw 9 may be tightened for holding.

The shank 17 of the member 13 of the.

of the dovetailed grooves and released therefrom by the following arrangement: The

- bolt is fitted to slide laterally in they plate 19 and is pivoted at 26 to the inner end of the cam-lever 24. This cam-lever 24 is provided with a diagonal slot 27, within which a stationary pin 28, carried by the plate 19, is 10- cated. The longitudinally-sliding plate ,19 is further provided with two laterally-extended dovetailed guides 29, within which a plate 30, which surmounts the plate 19, is fitted to slide, by means of guides 31, which engage the guides29 on the plate19. This laterally-slidingplate 30 is locked to and released from the longitudinally-sliding plate 19 by means ofa cam-lever 32 and sliding bolt 33. e

The bolt 33 is fitted to slide longitudinally in the plate 19' adjacent to one of the guides 31 on the'laterally-sliding plate 30 and is brought into engagement with the said guide 31'as follows: The bolt 33 is pivoted at 34 to the. inner end of the cam-lever 32, and the cam-lever is provided with a diagonal slot 35, within which a stationary pin 36, carried by the plate 19 is located. The laterally-sliding movement of the plate 30 is accurately adjusted in both directions by providing the longitudinally-sliding plate 19 with a bracketarm 37, having an eye 38, through which a screw 39, carried by the laterally-slidingplate 30, passes. The screw 39 is provided with two adjustable stops 40 41 upon opposite sides of the eye 38. It will thus be seen that by manipulating the stops 40 and 41 the sliding movement of the plate 30 may be arrested at a predetermined point in either direction. The laterally-sliding plate 30is provided with a circular dovetailed groove 42, with which the work-table 43 is rotatably engaged by means of a plurality of curved plates 44, screwed or otherwise secured to the under side of the table43.

A short section 45 of the curved plates is pivoted at 46, and the free end of the said plate is clamped to and released from'the laterally-sliding plate 30 for locking and releasing the table 43 as follows: A bolt 47 is fitted to slide in the table 43, which boltzis engaged by a cam 48, carried by a cam-lever 49. The rotatable work-table 43 is provided on its face with suitable grooves'50 for the attachment of'a clamp 51 of any well-known form for securing the blank to be operated upon in position on the table. The table, the laterally sliding plate, longitudinally-sliding plate, and

the bed-plate are all provided with openings therethrough in alinement with each other arranged centrally with respect to the'rotatable table, so as to permit the insertion of the cutting-tool therethrough for operating upon the blank.

I provide gages for accurately determining the rotary movement of the table as follows:

A ring gage 52.' is permanently carried by the work-table 43. This gage may be a separate plate, as shown clearly in Fig. 5, secured be tween the upper and lower members of the bedplate, or it may be formed integral with the bed-plate, if so desired. This gage is provided periphery, and the peripheral edge of the gage is provided with serrations 54, which may be engaged by a swinging spring-actuated lock 55, hinged at 56 to abracket-arm 57, projecting from the longitudinally-sliding plate 19. A spring 58 tends to hold the pointer 59 of the lock in engagement with a predetermined notch in the periphery of the gage 52, and a spring 60 serves to hold the lock 55 in its dissegment-gage 61 is rotatably mounted on the work-table in the present instance by providing the gage with a ring 62 engaging the outer periphery of the curved plates 44 45. A portion of the ring segment-gage 61 projects beyond the periphery of the ring gage 52, carried by the work-table, and this exposed portion is provided with a suitable scale 63, corresponding with the scale 53 of the gage 52. This segment-gage 61 is provided at one end with a pin-64, which engages the pointer 59 of the lock 55 for limiting the movement of the ring segment-gage in one direction. The ring segment-gage is provided with a springactuated lock 65, the pointer 66 of which is fitted to engage one of the notches 54. in the periphery of the ring gage 52. By these means twogages may be interlocked at a predetermined point on the scales while the lock 55 is in engagement with the gage 52. When the table is'released from the laterally-sliding plate and the lock 55 is withdrawn from its engagement with.the gage 52, the table may then be rotateduntil the lock comes into engagement with the lock 55. The lock 55 the gage 52 and the lock 65 be released from the gage 52 and the gage 61 again swung back to the desired point, when the operation may be repeated. When the laterally-sliding plate and rotary table are intended to be moved together laterally, the pointer 59 of the springactuated lock 55 is released from its engagement with the teeth 54 of the gage 53. The plate and table are locked together by operating the cam-lever v49, thus permitting the plate and table to be moved together laterally after the table has been adjusted rotatively on the said plate. The combination of these two scales thus enables the operator to reproduce cuts of a required depth in a very simple and accurate manner.

. It will be seen that by the use of the adjustable bed-plate, the longitudinally-adjustable plate, the laterally-adjustable plate, and the rotatable table, together with the gages therefor, I am enabled to bring the blank into any witha scale 53, extending half-way around its engaged position when so desired. A ring" may then be brought into engagement with position desired with respect to the cutter in the most accurate degree in a very simple and compact mechanism.

It is evident that changes might be resorted to in the form, construction, and arrangeyertically.

2. Two machine-supports, a bed-plate connected to one support in position to swing vertically and rock laterally and having a balland-socket connection with the other support, means for clamping the table in its several adjustments and means for adjusting one of the supports vertically.

3. A bed plate, a longitudinallysliding plate, a laterally-sliding plate, a work-table .carried thereby and means for limiting the movements of the laterally-sliding plate comprising a bracket-arm carried by the longitudinally-sliding plate having an eye, a screw carried by the laterally-sliding plate passing through the said eye and adjustable stops on the screw upon opposite sides of the said eye.

4. A bed-plate, superposed longitudinallysliding plate, laterally-sliding plate, and ro-- tary table, a gage carried thereby having a notched periphery and a lock carried by the longitudinally-sliding plate in position to engage and disengage the gage carried by the rotary table.

5. A bed-plate, superposed longitudinallysliding plate, laterally-sliding plate, and rotary table, a gage carried thereby,a second gage loosely mounted to rotate independently of the rotary table, means for connecting and disconnecting the longitudinally-sliding plate and gage fixed to the rotary table and means for connecting and disconnecting the two gages.

6. A bed-plate, superposed longitudinallysliding plate, laterally-sliding plate, androtary table, a ring gage carried thereby, a ring segment-gage loosely mounted to rotate on the table, means for connecting and disconnecting the two gages, a stop carried by the ring segment-gage and means for connecting and disconnecting. the table-gage and longitudinally-sliding plate, said means serving also to limit the rotary movement of the tablewhen disengaged therefrom.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 19th day of October, 1903.

FRANK P. PFLEGHAR.

Witnesses:

FREDK. HAYNES, R. B. SEWARD. 

